Recent Accounting Pronouncements and Developments - Additional Information (Detail) - Adjustments for New Accounting Principle, Early Adoption [Member] - USD ($) $ in Millions |
Jan. 01, 2017 |
Sep. 30, 2017 |
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| Retained Deficit [Member] | ASU 2016-09 [Member] | ||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Impact of reclassification adjustment due to adoption of new accounting pronouncement | $ 0.2 | |
| Deferred Tax Asset [Member] | ASU 2016-09 [Member] | ||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Impact of reclassification adjustment due to adoption of new accounting pronouncement | $ 0.2 | |
| Deferred Tax Asset Non Current [Member] | ASU 2015-17 [Member] | ||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Impact of reclassification adjustment due to adoption of new accounting pronouncement | $ 2.7 |
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- Definition Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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